Offensive Security Engineer

Foresite Cybersecurity

Offensive Security Engineer managing proactive security services for multi-tenant clients on the Horizon3.ai NodeZero platform. Leading security analysis and penetration testing initiatives across diverse infrastructures.

Posted 6/19/2026full-timeOverland Park • Kansas • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AWSAzureCloudCyber SecurityFirewallsGoogle Cloud Platform

About the role

Key responsibilities & impact

Manage and scale proactive security services built on the Horizon3.ai NodeZero platform.
Lead the deployment, orchestration, and continuous analysis of autonomous penetration testing across a multi-tenant client base.
Partner closely with internal Blue Teams, SOC Analysts, and client IT leaders to identify vulnerabilities, map attack paths, and validate remediations.
Configure, deploy, and manage the Horizon3.ai NodeZero platform across diverse multi-tenant client environments.
Schedule and execute continuous or on-demand autonomous penetration tests based on client risk profiles, compliance mandates, or zero-day threats.
Analyze complex NodeZero testing outputs to differentiate between theoretical vulnerabilities and actual, exploitable attack vectors.
Conduct post-remediation security validation testing to scientifically verify that security patches or configuration changes successfully closed the exploit path.
Translate highly technical attack data into clear, risk-prioritized remediation strategies for client IT and security leaders.

Requirements

What you’ll need

3–5 years of experience in cybersecurity, with at least 2 years working within an MSSP, SOC, or offensive security consulting team.
Deep understanding of penetration testing methodologies, the MITRE ATT&CK framework, and common network/cloud lateral movement techniques.
Strong grasp of enterprise networking (VLANs, firewalls, routing) and hybrid cloud architectures (AWS, Azure, GCP).
Exceptional ability to explain complex technical vulnerabilities and exploit chains to non-technical executive stakeholders.
Bachelor’s degree or equivalent practical experience.
Proven hands-on experience with Horizon3.ai NodeZero (certification or accreditation under the Horizon3.ai Vanguard Partner Program is a major plus).
Preferred Certifications: Horizon3.ai NodeZero Certified Professional / Administrator, CEH (Certified Ethical Hacker), CompTIA PenTest+, or OSCP (Offensive Security Certified Professional).

Benefits

Comp & perks

Comprehensive Health & Wellness: Robust medical insurance options to keep you and your family healthy.
Employer-Covered Insurance: We fully provide employer-paid Dental coverage, as well as Short-Term (STD) and Long-Term Disability (LTD).
Generous Time Off: We believe in a true work-life balance. You’ll start with 3 weeks of paid vacation, plus additional sick leave and paid company holidays.
Growth & Mentorship: Access to world-class training. We support your career trajectory, whether you’re looking to deepen your technical skills or move into leadership.
Impactful Work: Help protect global clients using the latest AI-enhanced security tools and GCP native technologies.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

penetration testingvulnerability analysisrisk assessmentnetwork securitycloud securityattack path mappingsecurity validation testingexploit chain analysisautonomous penetration testingMITRE ATT&CK framework

Soft Skills

communicationcollaborationtechnical explanationproblem-solvingleadership

Certifications

Horizon3.ai NodeZero Certified ProfessionalHorizon3.ai NodeZero Certified AdministratorCEHCompTIA PenTest+OSCP